Hakken（CONSEC）

Hakken is CONSEC's manufacturing brand for drilling and cutting equipment. Its diamond core drill range includes models with different power supplies, drilling capacities and provisions for automatic feeding. For contractors adding or replacing a rig-mounted drill, these differences matter when selecting a complete working setup. Specialist dealers can also use model-specific manuals and parts lists to assess a proposed machine and prepare technical enquiries.

• How four Hakken drill heads compare on power supply, capacity and configuration
• What to check if you plan to add automatic feeding later
• How manuals and parts lists support product evaluation and technical enquiries
• What contractors and dealers should confirm before ordering

Compare Hakken Diamond Core Drill Models

Start with the power supply available on site, the required hole diameter and the complete rig configuration. The weights below are for drill heads only; they are not the weight of a stand, bit and accessories combined. Confirm the model and specification supplied in your country before ordering.

SPZ-253U2i

230VUp to 254 mm2 speeds

Source: CONSEC Official Website
(https://www.consec.co.jp/article_source/data/en_product/detail/158.html)

A 230V option to assess when the required diameter exceeds the SPF-181Uh2i's 180 mm maximum. Check the full rig configuration and the connection used for the bit.

• Head weight13.6 kg; head only
• No-load speed490 / 1,150 rpm
• Spindle1-1/4"-7UNC external thread
• Base optionsSB-491, SB-494 or AB-491 series
• Automatic feedAdditional mounting parts required; sold separately

Included / separateDrill carriage included. Pole base, core bit and water collector are separate items. Water-collector fitting is also sold separately.

SPN-203At

110VUp to 205 mmSingle speed

Source: CONSEC Official Website
(https://www.consec.co.jp/article_source/data/en_product/detail/162.html)

Assess this head against a 110V site supply and an A-rod bit connection. Its voltage and spindle differ from the SPZ-253U2i and SPF-181Uh2i; it is not a like-for-like replacement on those points.

• Head weight10.8 kg; head only
• No-load speed760 rpm
• SpindleA-rod
• Base optionsSB-491, SB-494 or AB-491 series
• Automatic feedAdditional mounting parts required; sold separately

Included / separateDrill carriage included. Pole base, core bit and water collector are separate items.

SPF-181Uh2i

230VUp to 180 mm2 speeds

Source: CONSEC Official Website
(https://www.consec.co.jp/article_source/data/en_product/detail/116.html)

For a 230V configuration within its 180 mm maximum diameter, this head combines a 10.2 kg head weight with mounting provisions for a later automatic feed unit. No additional mounting parts are required for that unit.

• Dimensions212 × 327 × 423 mm (W × L × H)
• No-load speed700 / 1,250 rpm
• SpindleG1/2" + 1-1/4"-7UNC
• Base optionsSB-493, SB-491, SB-494 or AB-491 series
• Automatic feedNo additional mounting parts; feeding unit not included

Included / separateDrill carriage included. Pole base, core bit and water collector are separate items.

SPO-400U3w

120VUp to 406 mm3 speeds

Source: CONSEC Official Website
(https://www.consec.co.jp/article_source/data/en_product/detail/166.html)

Assess this head for larger-diameter configurations that fall beyond the ranges of the other three models shown. It requires a 120V supply; diameters above 370 mm also require the specified spacer.

• Head weight16.9 kg; head only
• No-load speed300 / 700 / 950 rpm
• Spindle1-1/4"-7UNC
• Base optionsSB-594 series or AB-591-1085
• Over 370 mmOne specified 30 mm spacer required

Included / separateDrill carriage included. Pole base, core bit and water collector are separate items. Water-collector fitting is also sold separately.

Maximum diameter alone does not establish suitability for a particular material, depth, drilling direction or fixing method. Check those conditions for the proposed drill, bit and stand combination.

For the SPZ-253U2i, the E2531-1 manual distinguishes the external 1-1/4"-7UNC connection (maximum 254 mm) from the internal G1/2 connection (maximum 53 mm). Do not apply the 254 mm limit to the internal connection. Use the manual matching the supplied machine when checking the bit and connection.

Planning for Automatic Feeding and On-Site Adjustment

If you want to start with a manually fed rig and add automatic feeding later, compare the mounting requirements before selecting the drill head. The SPF-181Uh2i accepts an automatic feeding system without additional mounting parts. The SPZ-253U2i and SPN-203At require additional parts sold separately. For these models, the difference is what is needed to fit the feeding unit, not whether a feeding unit is included with the drill.

Ask for the compatible feeding unit, mounting parts and complete configuration to be identified in the quotation. The SPO-400U3w is also listed as accepting automatic feeding; confirm its mounting requirements for the proposed setup.

Handle position and clutch adjustment

The four drill heads shown above have a handle that can be moved between the left and right sides and a swivelling water connection. Their slipping clutch can be adjusted on site without dismantling the gearbox. These features give you specific points to assess when access around the rig is restricted. Follow the instructions for the particular model; clutch adjustment is not a substitute for fault diagnosis or repair.

This site compares diamond core drills from several manufacturers. Compare the full configuration and the conditions of supply alongside the drill head specifications.

Model-Specific Manuals, Parts Lists and Support Enquiries

CONSEC provides model-specific instruction manuals and parts lists. For example, the SPZ-253U2i product page provides both documents. Before changing brands or evaluating a new product range, use the documents for the exact model being offered, rather than a similar-looking machine or a different voltage version.

Use the manual to check operating and maintenance requirements

The instruction manual is the starting point for the machine's setup, operating restrictions, inspection and adjustment requirements. Keep routine checks separate from repairs. The SPZ-253U2i manual directs repair work to an authorised CONSEC representative; a published maintenance section does not authorise every user or dealer to repair the machine.

Use the parts list to identify what you need to enquire about

A parts list helps identify components for a technical or parts enquiry. Match the model, document revision and relevant assembly before requesting a part. CONSEC notes that specifications can change, some parts may not be available to order and stock shortages may result in significant lead times.

Check the assembly version as well as the model

The SPZ-253U2i parts list A5140-2 distinguishes old and new carriage components. Its notes identify specific parts for Clamp Cover II C493 that are not compatible with Clamp Cover C494, and vice versa. The drill model alone is not enough to select every replacement part. Include the assembly identification and the relevant parts-list item or code in the enquiry. This restriction concerns the specified components, not a blanket incompatibility between all old and new assemblies.

Confirm the current supply, warranty and repair arrangements for your country with the supplier before purchase. Access to a parts diagram does not establish local stock or a repair turnaround time.

Preparing a Quotation or Technical Enquiry

For contractors adding or replacing a drill

Describe the work first so that the supplier can assess a specific configuration. Include the information relevant to your job:

• Base material, required hole diameter and depth, and drilling direction
• Available power supply, working space and proposed stand-fixing method
• Water supply, slurry collection or dust-control requirements
• The drill head, stand, bits and accessories you need in the quotation

If you want to retain existing equipment, add its make, model and connection or mounting details. A matching spindle thread alone does not establish compatibility between complete systems. Obtain confirmation for the actual combination before ordering.

• BitsConnection type, intended wet or dry use, and the diameter permitted for that connection
• Stand and carriageMounting interface, fixing arrangement and capacity for the intended diameter
• Automatic feedingCompatible feeding unit, mounting parts and permitted fixing method

When comparing a repair quote with replacement, ask what the replacement price includes. Separate the head, carriage, stand, bits, water-management equipment and any feeding unit or mounting parts. This gives you a defined setup to compare with the equipment you already own.

For specialist dealers evaluating the range

Identify the country, customer applications and models you intend to evaluate. Alongside product specifications and documents, confirm the purchasing terms, warranty process, repair responsibilities and parts-ordering arrangements. If you need a demonstration, training or authority to carry out repairs, establish those arrangements before committing to stock.

Hakken（CONSEC） Consumables and Bit Information

The following series are listed in CONSEC's Japanese catalogues. Treat them as a reference to product families, not as a confirmed shopping list for the drill heads above. Match the wet or dry application, connection, permitted diameter and exact drill model before ordering. Japanese catalogue specifications and availability may differ from those supplied in Europe.

Development Informed by Construction Work

Source: CONSEC Official Website
(https://www.consec.co.jp/en/)

CONSEC's research and development staff work with its in-house construction department, and feedback from dealers and users informs product development. Hakken also produces custom-made drilling and sawing equipment and diamond tools by adapting existing products.

For an application beyond a standard catalogue configuration, describe the material, access, fixing and operating conditions when making an enquiry. The scope and feasibility of a customised solution need to be agreed for the individual job.

About CONSEC

CONSEC traces its origins to 1967. Hakken Co., Ltd. was established in 1976 to manufacture and sell construction machinery. Its absorption in 1988 created the company's manufacturing, trading and construction divisions.

The Hiroshima Plant and other sites obtained ISO 9001 certification in 2000. The company moved to the Tokyo Stock Exchange Standard Market in April 2022.